Classification of Dinosaurs Pdf
They became the dominant terrestrial vertebrates after the TriassicJurassic extinction event 2013 mya. These divisions have proved.
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Dinosaur classification began in 1842 when Sir Richard Owen placed Iguanodon Megalosaurus and Hylaeosaurus in a distinct tribe or suborder of Saurian Reptiles for which I would propose the name of Dinosauria In 1887 and 1888 Harry Seeley divided dinosaurs into the two orders Saurischia and Ornithischia based on their hip structure.
. Dinosaurs are a diverse group of reptiles of the clade DinosauriaThey first appeared during the Triassic period between 243 and 23323 million years ago mya although the exact origin and timing of the evolution of dinosaurs is the subject of active research.
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